A crater lake is a lake that forms in a volcanic crater or caldera, such as a maar; less commonly and with lower association to the term a lake may form in an impact crater caused by a meteorite, or in an artificial explosion caused by humans. Sometimes lakes which form inside calderas are called caldera lakes, but often this distinction is not made. Crater lakes covering active (fumarolic) volcanic vents are sometimes known as volcanic lakes, and the water within them is often acidic, saturated with volcanic gases, and cloudy with a strong greenish color. Lakes located in dormant or extinct volcanoes tend to have fresh water, and the water clarity in such lakes can be exceptional due to the lack of inflowing streams and sediment.
Heaven Lake, Baekdu Mountain – China, North Korea
Heaven Lake is a crater lake on the border between China and North Korea. It lies within a caldera atop the volcanic Baekdu Mountain, a part of the Baekdudaegan mountain range and the Changbai mountain range. It is located partly in Ryanggang Province, North Korea, at 42.006°N 128.057°E, and partly in Jilin Province, northeastern China.
Viti Geothermal Crater Lake, Askja – Iceland
Askja is a stratovolcano situated in a remote part of the central highlands of Iceland. The name Askja refers to a complex of nested calderas within the surrounding Dyngjufjoll mountains, which rise to 1,510 m (4,954 ft), askja meaning box or caldera in Icelandic. The region is only accessible for a few months of the year.
Crater Lake, Licancabur – Chile
Licancabur is a highly symmetrical on the southernmost part of the border between Chile and Bolivia. It is located just southwest of Laguna Verde in Bolivia. The volcano dominates the landscape of the Salar de Atacama area.
Kerid Crater Lake, Iceland
Kerid is a volcanic crater lake located in the Grímsnes area in south Iceland, on the popular tourist route known as the Golden Circle. It is one of several crater lakes in the area, known as Iceland’s Western Volcanic Zone, which includes the Reykjanes peninsula and the Langjökull Glacier, created as the land moved over a localized hotspot, but it is the one that has the most visually recognizable caldera still intact.a
Yak Loum Crater Lake – Ratanakiri, Cambodia
Yak Loum is a lake and a popular tourist destination in the Ratanakiri province of northeastern Cambodia. Located approximately 3 miles (5 km) from the provincial capital, Banlung, the beautiful lake occupies a 4,000-year-old volcanic crater.
Crater Lake, Mount Ruapehu – New Zealand
Mount Ruapehu, or just Ruapehu, is an active stratovolcano at the southern end of the Taupo Volcanic Zone in New Zealand. It is 23 kilometres northeast of Ohakune and 40 kilometres southwest of the southern shore of Lake Taupo, within Tongariro National Park. The North Island’s major skifields and only glaciers are on its slopes.
Deriba Crater Lake, Jebel Marra – Darfur, Sudan
Deriba Crater is at the highest point of Jebel Marra at an elevation of 3,042 m (9,980 ft), in Darfur in the western part of Sudan. The caldera rim became Sudan’s new highest point, after the independence of South Sudan. It is between 5 km and 8 km in diameter across the outer crater. The inner crater is filled by a crater lake.
Vulcan Point within Crater Lake, Taal Volcano – Luzon, Philippines
Taal Volcano is a complex volcano located on the island of Luzon in the Philippines. Historical eruptions are concentrated on Volcano Island, an island near the middle of Lake Taal.
Crater Lake, Mount Katmai – Alaska, USA
Mount Katmai is a large stratovolcano on the Alaska Peninsula in southern Alaska, located within Katmai National Park and Preserve. It is about 6.3 miles (10 km) in diameter with a central lake-filled caldera about 3 by 2 mi (4.5 by 3 km) in area, formed during the Novarupta eruption of 1912.
Crater Lake (Okama), Mt. Zao – Honshu, Japan
Mount Zao is a complex volcano on the border between Yamagata Prefecture and Miyagi Prefecture in Japan. It consists of a cluster of stratovolcanoes and is the most active volcano in northern Honsh?.
Crater Lake, Mount Pinabuto – Luzon, Philippines
Lake Pinatubo is the summit crater lake of Mount Pinatubo formed after its climactic eruption on June 15, 1991. The lake is located near the boundaries of Pampanga, Tarlac and Zambales provinces in the Philippines and is the deepest lake in the country at 800 m (2,600 ft). It is about 90 km (56 mi) northwest of the capital city of Manila.
Kelimutu Crater Lake – Flores Island, Indonesia
Kelimutu volcano contains three striking summit crater lakes of varying colors. Tiwu Ata Mbupu (Lake of Old People) is usually blue and is the westernmost of the three lakes.
Crater Lakes in the Albertine Rift – Africa
In a region bursting with people, a few big open spaces remain—like the Rift floor in Queen Elizabeth Park, pocked with crater lakes formed by volcanic explosions.
Quilotoa Crater Lake – Ecuador
Quilotoa is a water-filled caldera and the most western volcano in the Ecuadorian Andes. The 3 kilometres (2 mi) wide caldera was formed by the collapse of this dacite volcano following a catastrophic VEI-6 eruption about 800 years ago, which produced pyroclastic flows and lahars that reached the Pacific Ocean, and spread an airborne deposit of volcanic ash throughout the northern Andes.
Crater Lake, Mount Mazama – Oregon, USA
A well-known crater lake, which bears the same name as the geological feature, is Crater Lake in Oregon, USA. It is located in the caldera of Mount Mazama. It is the deepest lake in the United States with a depth of 594 m (1,949 ft). Crater Lake is fed solely by falling rain and snow, with no inflow or outflow at the surface, and hence is one of the clearest lakes in the world.